Well a newer i5 wouldn't hurt but only if you planed on ocing it. With the i3 the only way to know is to test it for yourself, emulator benchmarks don't really show the whole picture.
Using that version of opengl probably has some to do with thishttp://richg42.blogspot.com/2014/05/the-truth-on-opengl-driver-quality.html
amd, intel, and nvidia all have their own problems with opengl drivers